Hello! It seems like you are experiencing performance issues after installing the ZOTAC GTX 750 Ti GPU in your PC. Here are a few things you can check and try to improve the performance:
1. Driver Installation: Make sure that you have installed the latest drivers for your GPU. You can download the drivers directly from the ZOTAC website or use GeForce Experience to automatically update them.
2. Power Supply: Your PSU seems to be adequate for your setup, but it's always good to double-check if it's providing enough power to your GPU. Make sure all power connectors are properly connected.
3. BIOS Update: Check if there are any BIOS updates available for your motherboard. Sometimes, BIOS updates can improve compatibility and performance with new hardware like GPUs.
4. RAM: Upgrading your RAM to 16GB can help improve performance, especially when running multiple instances of a game like MIR4. Make sure your RAM is running in dual-channel mode for better performance.
5. Temperature Monitoring: Check the temperature of your GPU while gaming. If it's running too hot, it can cause performance issues. Make sure your PC has adequate cooling and airflow.
6. Game Settings: Lowering the graphics settings in the game can help improve performance. Try tweaking the settings to find the right balance between visuals and performance.
7. Background Processes: Make sure there are no unnecessary background processes consuming resources while you are gaming. Close any unnecessary applications running in the background.
8. Check for Bottlenecks: Your Ryzen 3 3200G CPU may bottleneck the performance of your GPU in some scenarios. Monitor CPU and GPU usage while gaming to see if any component is maxing out.
By checking these points and making necessary adjustments, you should be able to optimize the performance of your PC with the new GPU. If you continue to experience issues, feel free to ask for further assistance. Good luck and happy gaming!